/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:49:53,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:49:53,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:49:53,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:49:53,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:49:53,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:49:53,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:49:53,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:49:53,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:49:53,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:49:53,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:49:53,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:49:53,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:49:53,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:49:53,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:49:53,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:49:53,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:49:53,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:49:53,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:49:53,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:49:53,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:49:53,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:49:53,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:49:53,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:49:53,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:49:53,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:49:53,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:49:53,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:49:53,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:49:53,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:49:53,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:49:53,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:49:53,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:49:53,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:49:53,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:49:53,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:49:53,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:49:53,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:49:53,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:49:53,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:49:53,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:49:53,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:49:53,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:49:53,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:49:53,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:49:53,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:49:53,617 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:49:53,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:49:53,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:49:53,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:49:53,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:49:53,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:49:53,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:49:53,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:49:53,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:49:53,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:49:53,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:49:53,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:49:53,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:49:53,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:49:53,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:49:53,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:49:53,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:49:53,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:49:53,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:49:53,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:49:53,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:49:53,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:49:53,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:49:53,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:49:53,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:49:53,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 12:49:53,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:49:53,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:49:53,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:49:53,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:49:53,930 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:49:53,931 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c [2020-08-18 12:49:53,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/031341c09/7aa177553e654b9abd1910a64277aabf/FLAG9ffe2def6 [2020-08-18 12:49:54,473 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:49:54,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c [2020-08-18 12:49:54,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/031341c09/7aa177553e654b9abd1910a64277aabf/FLAG9ffe2def6 [2020-08-18 12:49:54,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/031341c09/7aa177553e654b9abd1910a64277aabf [2020-08-18 12:49:54,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:49:54,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:49:54,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:49:54,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:49:54,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:49:54,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:49:54" (1/1) ... [2020-08-18 12:49:54,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68feb839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:54, skipping insertion in model container [2020-08-18 12:49:54,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:49:54" (1/1) ... [2020-08-18 12:49:54,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:49:54,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:49:55,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:49:55,408 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:49:55,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:49:55,556 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:49:55,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:55 WrapperNode [2020-08-18 12:49:55,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:49:55,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:49:55,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:49:55,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:49:55,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:55" (1/1) ... [2020-08-18 12:49:55,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:55" (1/1) ... [2020-08-18 12:49:55,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:55" (1/1) ... [2020-08-18 12:49:55,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:55" (1/1) ... [2020-08-18 12:49:55,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:55" (1/1) ... [2020-08-18 12:49:55,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:55" (1/1) ... [2020-08-18 12:49:55,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:55" (1/1) ... [2020-08-18 12:49:55,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:49:55,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:49:55,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:49:55,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:49:55,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:49:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:49:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:49:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 12:49:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 12:49:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 12:49:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 12:49:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 12:49:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:49:55,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 12:49:55,730 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 12:49:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-18 12:49:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-18 12:49:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-18 12:49:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-18 12:49:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-18 12:49:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-18 12:49:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 12:49:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-18 12:49:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-18 12:49:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 12:49:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 12:49:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 12:49:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 12:49:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 12:49:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 12:49:55,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 12:49:55,735 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 12:49:55,736 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 12:49:55,736 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 12:49:55,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 12:49:55,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 12:49:55,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 12:49:55,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 12:49:55,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 12:49:55,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 12:49:55,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 12:49:55,737 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 12:49:55,737 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 12:49:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 12:49:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 12:49:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 12:49:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 12:49:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 12:49:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 12:49:55,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 12:49:55,741 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 12:49:55,741 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 12:49:55,741 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 12:49:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:49:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:49:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 12:49:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 12:49:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 12:49:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 12:49:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 12:49:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 12:49:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 12:49:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 12:49:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 12:49:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 12:49:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 12:49:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 12:49:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 12:49:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:49:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 12:49:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 12:49:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 12:49:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 12:49:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 12:49:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 12:49:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 12:49:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 12:49:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 12:49:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 12:49:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 12:49:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 12:49:55,749 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 12:49:55,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 12:49:55,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-18 12:49:55,749 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 12:49:55,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-18 12:49:55,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-18 12:49:55,750 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 12:49:55,750 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-18 12:49:55,750 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-18 12:49:55,750 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 12:49:55,750 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-18 12:49:55,750 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-18 12:49:55,750 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-18 12:49:55,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:49:55,751 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 12:49:55,751 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:49:55,751 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:49:55,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 12:49:55,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:49:55,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:49:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:49:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:49:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 12:49:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:49:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 12:49:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 12:49:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:49:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 12:49:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 12:49:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 12:49:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 12:49:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:49:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:49:55,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:49:56,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:49:56,997 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 12:49:57,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:49:57 BoogieIcfgContainer [2020-08-18 12:49:57,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:49:57,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:49:57,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:49:57,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:49:57,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:49:54" (1/3) ... [2020-08-18 12:49:57,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e22a875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:49:57, skipping insertion in model container [2020-08-18 12:49:57,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:49:55" (2/3) ... [2020-08-18 12:49:57,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e22a875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:49:57, skipping insertion in model container [2020-08-18 12:49:57,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:49:57" (3/3) ... [2020-08-18 12:49:57,012 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_productSimulator.cil.c [2020-08-18 12:49:57,022 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:49:57,030 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:49:57,044 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:49:57,071 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:49:57,071 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:49:57,071 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:49:57,071 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:49:57,072 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:49:57,072 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:49:57,072 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:49:57,073 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:49:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states. [2020-08-18 12:49:57,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 12:49:57,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:49:57,128 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:49:57,128 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:49:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:49:57,133 INFO L82 PathProgramCache]: Analyzing trace with hash 88276295, now seen corresponding path program 1 times [2020-08-18 12:49:57,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:49:57,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143670861] [2020-08-18 12:49:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:49:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:57,938 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 12:49:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:49:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:49:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:49:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:49:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:49:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:49:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:49:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:49:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:49:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:49:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:49:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 12:49:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 12:49:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:49:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:49:58,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143670861] [2020-08-18 12:49:58,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:49:58,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:49:58,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867864147] [2020-08-18 12:49:58,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:49:58,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:49:58,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:49:58,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:49:58,197 INFO L87 Difference]: Start difference. First operand 245 states. Second operand 5 states. [2020-08-18 12:50:00,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:50:00,434 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2020-08-18 12:50:00,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:50:00,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-18 12:50:00,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:50:00,452 INFO L225 Difference]: With dead ends: 442 [2020-08-18 12:50:00,452 INFO L226 Difference]: Without dead ends: 251 [2020-08-18 12:50:00,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:50:00,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-18 12:50:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 202. [2020-08-18 12:50:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-18 12:50:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 247 transitions. [2020-08-18 12:50:00,579 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 247 transitions. Word has length 78 [2020-08-18 12:50:00,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:50:00,580 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 247 transitions. [2020-08-18 12:50:00,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:50:00,580 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 247 transitions. [2020-08-18 12:50:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 12:50:00,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:50:00,585 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:50:00,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:50:00,586 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:50:00,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:50:00,586 INFO L82 PathProgramCache]: Analyzing trace with hash 128874418, now seen corresponding path program 1 times [2020-08-18 12:50:00,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:50:00,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77843754] [2020-08-18 12:50:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:50:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:00,981 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 12:50:00,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:50:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:50:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:50:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:50:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:50:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:50:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:50:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 12:50:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 12:50:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:50:01,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77843754] [2020-08-18 12:50:01,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:50:01,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:50:01,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651301623] [2020-08-18 12:50:01,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:50:01,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:50:01,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:50:01,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:50:01,153 INFO L87 Difference]: Start difference. First operand 202 states and 247 transitions. Second operand 6 states. [2020-08-18 12:50:01,852 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:50:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:50:03,688 INFO L93 Difference]: Finished difference Result 366 states and 459 transitions. [2020-08-18 12:50:03,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:50:03,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-08-18 12:50:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:50:03,694 INFO L225 Difference]: With dead ends: 366 [2020-08-18 12:50:03,696 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 12:50:03,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:50:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 12:50:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 193. [2020-08-18 12:50:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-18 12:50:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 235 transitions. [2020-08-18 12:50:03,759 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 235 transitions. Word has length 79 [2020-08-18 12:50:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:50:03,760 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 235 transitions. [2020-08-18 12:50:03,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:50:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 235 transitions. [2020-08-18 12:50:03,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 12:50:03,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:50:03,764 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:50:03,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:50:03,765 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:50:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:50:03,765 INFO L82 PathProgramCache]: Analyzing trace with hash 2075074883, now seen corresponding path program 1 times [2020-08-18 12:50:03,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:50:03,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030223782] [2020-08-18 12:50:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:50:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,213 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 12:50:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:50:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:50:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:50:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:50:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:50:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:50:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:50:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 12:50:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 12:50:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:50:04,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030223782] [2020-08-18 12:50:04,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:50:04,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:50:04,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355766498] [2020-08-18 12:50:04,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:50:04,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:50:04,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:50:04,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:50:04,448 INFO L87 Difference]: Start difference. First operand 193 states and 235 transitions. Second operand 12 states. [2020-08-18 12:50:05,032 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 12:50:05,701 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-18 12:50:06,540 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 12:50:07,621 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 12:50:08,024 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:50:11,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:50:11,736 INFO L93 Difference]: Finished difference Result 628 states and 796 transitions. [2020-08-18 12:50:11,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 12:50:11,737 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 12:50:11,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:50:11,743 INFO L225 Difference]: With dead ends: 628 [2020-08-18 12:50:11,743 INFO L226 Difference]: Without dead ends: 476 [2020-08-18 12:50:11,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-18 12:50:11,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-18 12:50:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 385. [2020-08-18 12:50:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 12:50:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 480 transitions. [2020-08-18 12:50:11,852 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 480 transitions. Word has length 84 [2020-08-18 12:50:11,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:50:11,853 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 480 transitions. [2020-08-18 12:50:11,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:50:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 480 transitions. [2020-08-18 12:50:11,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 12:50:11,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:50:11,856 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:50:11,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:50:11,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:50:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:50:11,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1129127896, now seen corresponding path program 1 times [2020-08-18 12:50:11,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:50:11,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688176124] [2020-08-18 12:50:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:50:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,302 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 12:50:12,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:50:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:50:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:50:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:50:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:50:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:50:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:50:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 12:50:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 12:50:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 12:50:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:50:12,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688176124] [2020-08-18 12:50:12,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:50:12,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 12:50:12,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046104767] [2020-08-18 12:50:12,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:50:12,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:50:12,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:50:12,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:50:12,517 INFO L87 Difference]: Start difference. First operand 385 states and 480 transitions. Second operand 16 states. [2020-08-18 12:50:13,165 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 12:50:13,832 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-18 12:50:14,639 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 12:50:15,435 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:50:16,375 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 12:50:17,502 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 12:50:18,275 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-08-18 12:50:18,946 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-08-18 12:50:19,268 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:50:19,618 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 12:50:20,124 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-18 12:50:20,589 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-18 12:50:21,130 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-18 12:50:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:50:25,580 INFO L93 Difference]: Finished difference Result 1582 states and 2206 transitions. [2020-08-18 12:50:25,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 12:50:25,585 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-08-18 12:50:25,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:50:25,602 INFO L225 Difference]: With dead ends: 1582 [2020-08-18 12:50:25,604 INFO L226 Difference]: Without dead ends: 1238 [2020-08-18 12:50:25,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 12:50:25,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-08-18 12:50:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1109. [2020-08-18 12:50:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-18 12:50:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1462 transitions. [2020-08-18 12:50:25,934 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1462 transitions. Word has length 90 [2020-08-18 12:50:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:50:25,934 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1462 transitions. [2020-08-18 12:50:25,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:50:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1462 transitions. [2020-08-18 12:50:25,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 12:50:25,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:50:25,939 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:50:25,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:50:25,939 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:50:25,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:50:25,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1905240978, now seen corresponding path program 1 times [2020-08-18 12:50:25,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:50:25,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592704792] [2020-08-18 12:50:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:50:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,251 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 12:50:26,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:50:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:50:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:50:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:50:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:50:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:50:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:50:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 12:50:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 12:50:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 12:50:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 12:50:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:50:26,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592704792] [2020-08-18 12:50:26,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:50:26,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 12:50:26,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237247180] [2020-08-18 12:50:26,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 12:50:26,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:50:26,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 12:50:26,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:50:26,434 INFO L87 Difference]: Start difference. First operand 1109 states and 1462 transitions. Second operand 8 states. [2020-08-18 12:50:26,866 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 12:50:30,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:50:30,359 INFO L93 Difference]: Finished difference Result 2674 states and 3837 transitions. [2020-08-18 12:50:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 12:50:30,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 12:50:30,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:50:30,371 INFO L225 Difference]: With dead ends: 2674 [2020-08-18 12:50:30,371 INFO L226 Difference]: Without dead ends: 1606 [2020-08-18 12:50:30,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-08-18 12:50:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2020-08-18 12:50:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1507. [2020-08-18 12:50:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-08-18 12:50:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2004 transitions. [2020-08-18 12:50:30,647 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2004 transitions. Word has length 94 [2020-08-18 12:50:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:50:30,648 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 2004 transitions. [2020-08-18 12:50:30,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 12:50:30,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2004 transitions. [2020-08-18 12:50:30,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-08-18 12:50:30,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:50:30,653 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:50:30,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:50:30,654 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:50:30,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:50:30,654 INFO L82 PathProgramCache]: Analyzing trace with hash -509299228, now seen corresponding path program 1 times [2020-08-18 12:50:30,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:50:30,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013780120] [2020-08-18 12:50:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:50:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,023 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 12:50:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:50:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:50:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:50:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:50:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:50:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:50:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:50:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 12:50:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 12:50:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 12:50:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:50:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 12:50:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 12:50:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 12:50:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-08-18 12:50:31,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013780120] [2020-08-18 12:50:31,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:50:31,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 12:50:31,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660669812] [2020-08-18 12:50:31,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:50:31,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:50:31,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:50:31,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:50:31,284 INFO L87 Difference]: Start difference. First operand 1507 states and 2004 transitions. Second operand 12 states. [2020-08-18 12:50:32,456 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-08-18 12:50:33,322 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 12:50:36,745 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 12:50:40,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:50:40,591 INFO L93 Difference]: Finished difference Result 2888 states and 4054 transitions. [2020-08-18 12:50:40,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 12:50:40,592 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2020-08-18 12:50:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:50:40,605 INFO L225 Difference]: With dead ends: 2888 [2020-08-18 12:50:40,606 INFO L226 Difference]: Without dead ends: 1787 [2020-08-18 12:50:40,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 12:50:40,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-08-18 12:50:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1658. [2020-08-18 12:50:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-08-18 12:50:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2197 transitions. [2020-08-18 12:50:41,161 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2197 transitions. Word has length 122 [2020-08-18 12:50:41,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:50:41,161 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2197 transitions. [2020-08-18 12:50:41,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:50:41,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2197 transitions. [2020-08-18 12:50:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-18 12:50:41,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:50:41,169 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:50:41,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:50:41,169 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:50:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:50:41,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1104863335, now seen corresponding path program 1 times [2020-08-18 12:50:41,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:50:41,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576513938] [2020-08-18 12:50:41,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:50:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,588 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 12:50:41,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:50:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:50:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:50:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:50:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:50:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:50:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:50:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 12:50:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 12:50:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:50:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:50:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:50:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 12:50:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 12:50:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-18 12:50:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-18 12:50:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-18 12:50:41,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576513938] [2020-08-18 12:50:41,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:50:41,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 12:50:41,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550412665] [2020-08-18 12:50:41,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:50:41,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:50:41,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:50:41,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:50:41,933 INFO L87 Difference]: Start difference. First operand 1658 states and 2197 transitions. Second operand 11 states. [2020-08-18 12:50:43,700 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:50:43,981 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:50:44,344 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:50:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:50:46,036 INFO L93 Difference]: Finished difference Result 3027 states and 4240 transitions. [2020-08-18 12:50:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:50:46,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-08-18 12:50:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:50:46,052 INFO L225 Difference]: With dead ends: 3027 [2020-08-18 12:50:46,053 INFO L226 Difference]: Without dead ends: 1798 [2020-08-18 12:50:46,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-08-18 12:50:46,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2020-08-18 12:50:46,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1658. [2020-08-18 12:50:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-08-18 12:50:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2195 transitions. [2020-08-18 12:50:46,541 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2195 transitions. Word has length 170 [2020-08-18 12:50:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:50:46,541 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2195 transitions. [2020-08-18 12:50:46,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:50:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2195 transitions. [2020-08-18 12:50:46,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-18 12:50:46,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:50:46,548 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:50:46,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:50:46,548 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:50:46,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:50:46,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1658452204, now seen corresponding path program 1 times [2020-08-18 12:50:46,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:50:46,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63324295] [2020-08-18 12:50:46,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:50:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,884 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 12:50:46,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:50:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:50:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:50:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:50:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:50:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:50:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:50:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 12:50:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:50:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:46,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:50:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:50:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 12:50:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 12:50:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-18 12:50:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 12:50:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-18 12:50:47,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63324295] [2020-08-18 12:50:47,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:50:47,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 12:50:47,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463026271] [2020-08-18 12:50:47,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:50:47,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:50:47,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:50:47,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:50:47,188 INFO L87 Difference]: Start difference. First operand 1658 states and 2195 transitions. Second operand 12 states. [2020-08-18 12:50:49,078 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 12:50:49,379 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:50:49,684 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:50:49,999 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:50:52,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:50:52,108 INFO L93 Difference]: Finished difference Result 3435 states and 4802 transitions. [2020-08-18 12:50:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 12:50:52,109 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2020-08-18 12:50:52,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:50:52,121 INFO L225 Difference]: With dead ends: 3435 [2020-08-18 12:50:52,121 INFO L226 Difference]: Without dead ends: 1818 [2020-08-18 12:50:52,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-08-18 12:50:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2020-08-18 12:50:52,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1678. [2020-08-18 12:50:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1678 states. [2020-08-18 12:50:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2217 transitions. [2020-08-18 12:50:52,460 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2217 transitions. Word has length 166 [2020-08-18 12:50:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:50:52,461 INFO L479 AbstractCegarLoop]: Abstraction has 1678 states and 2217 transitions. [2020-08-18 12:50:52,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:50:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2217 transitions. [2020-08-18 12:50:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-18 12:50:52,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:50:52,467 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:50:52,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:50:52,467 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:50:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:50:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash 47025257, now seen corresponding path program 1 times [2020-08-18 12:50:52,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:50:52,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607565052] [2020-08-18 12:50:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:50:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,818 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 12:50:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:50:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:50:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:50:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:50:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:50:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:50:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:50:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:50:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 12:50:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 12:50:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:50:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:50:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:50:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:50:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 12:50:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 12:50:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:52,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:50:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-18 12:50:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-18 12:50:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:50:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-08-18 12:50:53,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607565052] [2020-08-18 12:50:53,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:50:53,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 12:50:53,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998636107] [2020-08-18 12:50:53,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:50:53,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:50:53,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:50:53,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:50:53,048 INFO L87 Difference]: Start difference. First operand 1678 states and 2217 transitions. Second operand 10 states. [2020-08-18 12:50:53,791 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 210